Correlation of motor cortex brain mapping data with magnetic resonance imaging

Mitchel S. BergerDepartments of Neurological Surgery and Neuro-Radiology, and Northwest Neuro-Oncology Research Section, University of Washington Medical Center, Seattle, Washington

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Wendy A. CohenDepartments of Neurological Surgery and Neuro-Radiology, and Northwest Neuro-Oncology Research Section, University of Washington Medical Center, Seattle, Washington

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George A. OjemannDepartments of Neurological Surgery and Neuro-Radiology, and Northwest Neuro-Oncology Research Section, University of Washington Medical Center, Seattle, Washington

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✓ Brain maps derived intraoperatively from patients undergoing tumor resection were correlated retrospectively with magnetic resonance (MR) images with respect to the precise localization of the motor cortex in an attempt to identify useful preoperative MR imaging landmarks that correspond to functional brain regions. Superior axial T2-weighted MR images consistently localized the central sulcus, whereas parasagittal and far-lateral sagittal images readily identified the rolandic (sensorimotor) cortex, as a functional unit, based on the cingulate-marginal sulcus and insula, respectively. It is therefore concluded that multiplanar MR images may serve as a useful preoperative planning aid prior to removing intrinsic brain tumors within or adjacent to the motor cortex.

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